Alexandra Sirota, North Carolina Justice Center, March 2012. More than 880,000 working North Carolinians received the state Earned Income Tax Credit (EITC) in 2010. Among those eligible for the EITC included probation officers, firefighters, library technicians, nursing aides and medical assistants, teachers, police patrol officers, restaurant cooks and waitresses, retail salespersons, and office administration workers.